JP2002036969A - Composite material for automobile interior finish and automobile interior finish members - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide automobile interior finish members, which retains the excellent sound absorption qualities, has immunity form dirt caused by airflows, and generates no abnormal sound. SOLUTION: The composite material for automobile interior finish is a heat- resisting film (a) with its melting point of no less than 150 deg.C, which is coated with a resin layer (b) compounded with a foaming agent. In another embodiment, the composite material for automobile interior finish is the heat-resisting film (a) with its melting point of no less than 150 deg.C, which is laminated with a resin foaming layer (d). Also, in either the composite materials, lamination of a resin layer with thermal plasticity (c), having its melting point of less than 151 deg.C, on the outer surface of the heat-resisting film (a), gives the other embodiment of the composite material for automobile interior finish. Further, there is the automobile interior finish members consisting of each member for surface, substratum, and back surface, composed in such a order, wherein the back surface member comprises the interior finish composite materials (a)/(b) or (a)/(d), or (c)/(a)/(b) or (c)/(a)/(d).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interior component which can be used as a member constituting an interior material for a vehicle, and an interior material for a vehicle which uses the interior component as a back surface material.

[0002]

2. Description of the Related Art Various types of vehicle interior materials are used. As characteristics required for vehicle interior materials, their decorativeness and contact feeling to passengers are indispensable, but recently low air permeability is also required. If air permeability is high, a phenomenon in which indoor air permeates through the interior material due to a pressure difference and may move toward the body may occur, but at this time, fine particles such as tobacco tar floating in the indoor air may adhere to the interior material surface. It is trapped and becomes dirty and adheres to the interior material. Therefore, it is necessary to eliminate this air flow, and as a countermeasure, an interior material has been provided with an air-permeable blocking layer. Generally, a plastic film is used for the air-permeable barrier layer.

[0003] Japanese Patent Application Laid-Open No. Hei 7-117571 discloses an interior material for a vehicle comprising a skin material (with a cushion material) / multilayer film / base material. The multilayer film includes a low-melting-point resin layer having thermal adhesiveness and a high-melting-point resin layer between them, and this high-melting-point layer functions as an air-permeable barrier layer. However, although this invention is effective against the problem of contamination of the ceiling skin material, the sound from the indoor side is reflected by this air-permeable barrier layer because the air-permeable barrier layer is directly behind the thin skin material. As a result, there is a problem that the sound absorbing function as an interior material is impaired. Further, Japanese Utility Model Laid-Open No. 5-65532 discloses a structural material composed of a skin material / substrate / back surface material (hot melt + impermeable film). In this configuration, since this structural material has a resin film layer on the rearmost surface side in contact with the body of the vehicle, noise occurs due to friction between the resin layer and the metallic body due to vibration of the vehicle, etc. Give pleasure.

[0004]

SUMMARY OF THE INVENTION The present invention provides a vehicle which does not have the above-mentioned problems, that is, which has good sound absorbing properties, has less occurrence of dirt due to airflow in a room, and is excellent in preventing generation of abnormal noise. It is intended to provide interior materials for use.

[0005]

SUMMARY OF THE INVENTION The present invention has a melting point of 150.degree.
The present invention relates to a vehicle interior component in which the heat-resistant film (a) is coated with a resin layer (b) containing a foaming agent. The present invention also relates to a vehicle interior component in which a resin foam layer (d) is laminated on a heat-resistant film (a) having a melting point of 150 ° C. or higher. Another aspect of the present invention is a vehicle interior component according to any of the above components, further comprising a thermoplastic resin layer (c) having a melting point of 150 ° C. or lower outside the heat-resistant film (a). It relates to a component.
Furthermore, the present invention provides a vehicle interior material obtained by combining a skin material, a base material, and a back material in this order, wherein the back material is any one of the above-described interior components (a) / (b) or (a).
/ (D), and relates to a vehicle interior material laminated and molded such that the heat-resistant film (a) surface of the back surface material is positioned on the base material side. In addition, the present invention provides a vehicular interior material in which a skin material, a base material, and a back material are combined in this order, wherein the back material is the above-described interior component (c) / (a) / (b) or (c). ) / (A) / (d), and relates to a vehicle interior material laminated and molded such that the thermoplastic resin (c) surface of the back surface material is positioned on the base material side.

A feature of the present invention is that by incorporating a heat-resistant film (a) having a melting point of 150 ° C. or higher, a non-breathable layer is provided to prevent the generation of stains on the skin material due to ventilation, and this layer is formed. By arranging it far from the skin material, reflection of room sound by this resin film can be prevented, and since the outermost layer in contact with the vehicle body has a foamed structure, it is possible to prevent the generation of frictional noise with the vehicle body. Is where you can.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION A member for vehicle construction according to the present invention functions as a back surface material of an interior material for a vehicle, acts as a ventilation blocking layer for blocking the flow of air from the indoor side to the body side, and serves as a back surface material. It is useful as a backing material that prevents generation of abnormal noise due to friction between the two and that has improved releasability during molding. The vehicle component according to the present invention is a composite in which a heat-resistant film (a) having a melting point of 150 ° C. or more is coated with a resin layer (b) containing a foaming agent. This is a composite in which a resin foam layer (d) is laminated on (a). The resin foamed layer more preferably has a melting point of 1.
A resin layer (b) containing a foaming agent coated on a heat-resistant film (a) at 50 ° C. or higher is foamed after being applied. However, the resin foam layer may be a foam resin sheet or film formed in advance, which is bonded to the heat-resistant film (a) by a method such as using an adhesive or partially melting. Can be. When the resin foam layer is formed by applying the resin (b) containing a foaming agent and then foaming, the resin layer (b) is mixed with the heat-resistant film (a) at the same time as or after the coating in a heating step. It may have a foamed structure foamed by a foaming agent. The foaming in the heating step may be performed after the interior material for the vehicle is combined with the skin material and the base material, or may be performed by heating at the stage of forming the interior material for the vehicle.

According to another aspect of the vehicle component of the present invention, in any one of the above-described configurations, the heat-resistant film (a) is provided outside the heat-resistant film (a), that is, the resin layer (b) containing a foaming agent or the foamed resin. This is a composite in which a thermoplastic resin layer (c) having a melting point of 150 ° C. or lower is further laminated on the side opposite to the layer (d). By having this thermoplastic resin layer (c), it functions as a hot melt adhesive, which is convenient for forming a further composite by combining with other members.

In order to coat the heat-resistant film (a) with the resin layer (b) containing a foaming agent or the thermoplastic resin (c), a primer is applied to the surface of the heat-resistant film (a) prior to coating, and anchor treatment is performed. It is preferable to activate the surface by performing a pretreatment such as a corona discharge treatment, whereby the heat-resistant film (a) and the resin layer (b) containing the foaming agent or the thermoplastic resin (c)
Can be more securely bonded.

The heat-resistant film (a) is selected from resins having a melting point of 150 ° C. or higher, preferably resins having a melting point of 160 ° C. or higher. By incorporating such a heat-resistant film layer into the vehicle interior component, when the interior component or a vehicle interior material obtained by combining this with a skin material and a base material is subjected to thermoforming as a pinhole, etc. Since no defective portion is generated, the air-impermeable layer can be reliably included. Examples of such a resin for a heat-resistant film include polyamide resins having a high melting point such as nylon 6, 66, 6/66, 6/10, 11, and 12; polypropylene resins;
Vinyl alcohol resin, polyethylene terephthalate,
Polyester resin such as polybutylene terephthalate,
Examples thereof include a polyurethane resin, an acrylic resin, and a polycarbonate resin. The film may be stretched or unstretched, and preferably has a breaking elongation of 10% or more. The thickness is 8 to 50 μm, preferably 9 to 30 μm. If the thickness is less than 8 μm, holes are easily formed by heat and pressure during molding, which hinders the performance of preventing ventilation. In addition, the handleability is also deteriorated by being too thin. When the thickness is more than 50 μm, the elongation during molding is deteriorated, and the shapeability is adversely affected.

The coating composition for coating the resin (b) containing a foaming agent to be applied to the heat-resistant film (a) includes an acrylate copolymer, a urethane-based resin, and an ethylene-vinyl acetate copolymer as a base resin. Combinations or the like can be used alone or as a blend. The coating composition may contain, as an additive, a silicone-based antifoaming agent, a blocking inhibitor, a drying accelerator, an antioxidant, a coloring agent, a filler, and the like, in addition to the foaming agent. The coating composition is preferably used as a dispersion such as a solution or an emulsion dissolved in water or a solvent.

The blowing agent is of a type that generates a gas upon heating, and preferred examples thereof include inorganic blowing agents such as sodium bicarbonate and ammonium bicarbonate, nitroso compounds, azo compounds, and sulfonyl hydrazides. A microcapsule type foaming agent in which isobutylene is encapsulated by using a vinylidene chloride / acrylonitrile or acrylonitrile / methyl methacrylate copolymer resin as a shell is particularly preferable. In the case of microcapsules, those having a particle size of about 5 to 30 μm are particularly preferred. The foaming agent may be used alone or in combination of two or more. Also,
Foaming aids such as salicylic acid and urea compounds may be added to the coating composition.

The structural member for vehicle interior according to the present invention is obtained by coating the above-mentioned heat-resistant film (a) with a resin layer (b) containing a foaming agent and laminating and integrating the same. Resin layer (b)
Is different depending on the state of the foam formed by heating, and cannot be specified unconditionally, but is generally preferably 1
６０60 g / m ² , more preferably 3-30 g / m ² . The method of coating the heat-resistant film (a) with the resin composition (b) containing the foaming agent is not particularly limited, as long as it can form a coating film with a uniform thickness on the film. Any coating method can be adopted, and examples include a method using gravure, flexo, offset, a roll coater, a doctor coater, an air coater, a rotary screen, and a T-die.

Another aspect of the vehicle component according to the present invention is a laminate of a heat-resistant film (a) and a resin layer (b) containing a foaming agent, or a heat-resistant film (a) and a resin foam layer (d). Has a three-layer structure in which a thermoplastic resin layer (c) having a melting point of 150 ° C. or lower is further laminated outside the laminate. The thermoplastic resin layer (c) having a melting point of 150 ° C. or less is based on a laminate of a heat-resistant film (a) and a resin layer (b) containing a foaming agent or a heat-resistant film (a) and a resin foam layer (d). It can function as a hot melt adhesive when forming an interior material for a vehicle by bonding to a material.

A thermoplastic resin layer having a melting point of 150 ° C. or lower (c)
Has a melting point of preferably 90 to 140 ° C and an MFR of 1 to 1.
00 g / 10 min, preferably 3 to 90 g / 10 min. Here, the MFR is based on JIS K7210.
The values measured under the temperature condition of 190 ° C. and the test load of 21.18 N among the test methods shown in FIG. If the MFR of the hot melt film is lower than 1, the melt viscosity at the time of molding is high, so that the melt does not sufficiently penetrate into the adherend, and sufficient adhesive strength cannot be obtained. On the other hand, if it is higher than 100, the melt viscosity of the resin at the time of molding is too low, so that it penetrates only to the lower side at the time of bonding of the upper and lower adherends, for example, only the base material, and still has a sufficient adhesive force Is difficult to obtain. Use of a material having an excessively high MFR adversely affects heat resistance as an interior material for an automobile. A more preferred range of MFR is 3 to 90.

The thickness of the thermoplastic resin layer (c) is preferably from 10 to 100 μm, more preferably from 20 to 80 μm. If the thickness is less than 10 μm, the resin does not sufficiently penetrate into the base material during molding, so that sufficient adhesive strength cannot be obtained. If the thickness is more than necessary, it is disadvantageous in terms of economy, and if it exceeds 100 μm, the quality becomes excessive. More preferable thickness is 30 to 60 μm
It is. The hot melt film may be used as a multilayer film having two or more layers, but a single layer is more preferable in terms of cost, simplicity of a manufacturing process, and particularly, in terms of recyclability.

As such resins, various polyethylene resins (low density, medium density, high density, linear low density, branched low density) or acid-modified resins thereof; ethylene-acrylic acid copolymer, ethylene- Methacrylic acid copolymer, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, ethylene-methyl acrylate copolymer,
Ethylene-butyl acrylate copolymer, ethylene-methyl methacrylate copolymer, ethylene-butyl methacrylate copolymer, ethylene- (meth) acrylate copolymer, ethylene-maleic acid copolymer, ethylene-itaconic acid copolymer Coalesce, ethylene-α-olefin copolymer, ethylene-acrylate-methacrylic acid terpolymer, ethylene-acrylate-maleic anhydride terpolymer, or an acid or silane-modified resin thereof;
Ionomers obtained by ion-crosslinking a copolymer of ethylene and acrylic acid or methacrylic acid; atactic polypropylene or acid-modified resins thereof; copolymer polyamides; terephthalic acid and ethylene glycol and / or 1,4-butanediol And copolymer polyesters containing other components, and the like. These resins may be used alone or as a mixture. These also have calcium carbonate,
Various additives such as a filler such as talc and a tackifier may be mixed.

The heat-resistant film (a) is made of a thermoplastic resin (c)
May be applied by coating the thermoplastic resin (c) on the heat-resistant film, or may be extruded into a film and laminated. Alternatively, both components may be preliminarily formed as a film, which may be bonded and integrated by an adhesive or heat fusion. The coating on the heat-resistant film can be performed using a usual resin coating device such as a T-die or a roll coater. In this case, if the surface of the heat-resistant film is pre-treated by corona discharge, flame treatment, AC treatment, or the like, the adhesiveness is further improved. Thermoplastic resin (c)
The adhesiveness is further improved by performing ozone treatment on the surface.

The present invention also relates to a vehicle interior material using the above vehicle interior component as a back surface material. The vehicle interior material is a member attached to the interior surface of the body of the vehicle, and is generally composed of a skin material, a base material, and a back material.
Consists of components. The back material constitutes the side that contacts the body,
On the other hand, the skin material is configured to come inside the vehicle, and the base material is configured as an intermediate layer between the skin material and the back surface material. In the present invention, by using the vehicle interior component as the back surface material and by setting the skin material and the base material as described below, good sound absorption is maintained, and the skin material is stained by the airflow in the room. An object of the present invention is to provide an interior material for a vehicle, which generates less noise and does not generate noise.

In the vehicle interior material of the present invention, the base material is preferably a material which can be shaped by heating and pressurizing and has air permeability. Such a base material is generally incorporated in a vehicle interior material for the purpose of sound absorption, heat insulation, softness / elasticity when touched by humans, and design, and examples thereof include inorganic fibers, Organic fiber,
Alternatively, a nonwoven fabric in which a mixture of these fibers is bonded to each other with a thermoplastic resin, or a knitted or woven fabric made of these fibers may be used. In the above, glass fibers and carbon fibers are used as the inorganic fibers, and various natural fibers such as cotton and hemp are used as the organic fibers; polyester fibers, polyamide fibers, acrylic fibers, polypropylene fibers, polyvinyl alcohol fibers, and acetate fibers. System fiber,
Various synthetic or regenerated fibers such as rayon can be exemplified. As the substrate, a foamed urethane sheet or a sheet reinforced with glass fibers or the like can be used.

The skin material of the vehicle interior material works to provide a decorative effect in the room and to give a good feeling when a passenger comes in contact with the skin material. To be elected. Specifically, a nonwoven fabric or a woven fabric made of polyester fiber, polypropylene fiber, or the like, a knit, a brushed knit, or a backing of these with a foamed urethane or a nonwoven fabric can be used.

The vehicle interior material of the present invention, which comprises a skin material, a base material, and a back material in this order, is provided in one embodiment as a resin layer (a) having a melting point of 150 ° C. or more and a foaming agent mixed with a foaming agent. Interior component (a) / (b) coated with b), or interior component in which resin foam layer (d) is laminated on heat-resistant film (a) having a melting point of 150 ° C. or higher.
The back material composed of (a) / (d) is, in another aspect, the back material
A thermoplastic resin layer (c) having a melting point of 150 ° C. or less was further laminated on the outside of the heat-resistant film (a) of the interior component made of (a) / (b) or (a) / (d). A backing material composed of (a) / (b) or (c) / (a) / (d) is used. In the former mode, the heat-resistant film (a) of the back material in any case
Laminated and molded so that the surface is located on the side of the base material, and in the latter case, the thermoplastic resin (c) of the back material in any case
It is laminated and molded so that the surface is located on the substrate side. Here, the resin (b) containing the foaming agent may be in an unfoamed state, or the interior component may be formed in a foamed state.

The interior material for a vehicle may be formed by laminating a skin material, a base material, and a back surface material, and then bonding and then forming them one after another, or molding and bonding may be performed simultaneously. Alternatively, the base material and the backing material may be bonded and integrated first, and then the remaining members may be combined. In the former mode, the bonding between the base material and the backing material may be performed by applying an adhesive to one or both of the bonding interfaces, or by performing hot bonding with a hot melt film interposed therebetween. In the latter embodiment, the thermoplastic resin (c) having a melting point of 150 ° C. or less can be directly used as a hot melt resin for thermal bonding.

[0024]

The present invention will be described below more specifically and in detail with reference to examples. Example 1 A coating resin composition was applied on a heat-resistant film by a gravure printing method so that the resin application amount after drying was 5 g / m ² . A 12 μm thick biaxially stretched PET film subjected to surface corona discharge treatment was used as the heat-resistant film. The coating resin composition was an acrylic ester copolymer as a base resin, and vinylidene chloride / acrylonitrile copolymer film as a foaming agent. The encapsulated microcapsules and an aqueous dispersion containing a small amount of a silicone-type defoamer and a drying accelerator as additives were used. The gravure printing was performed at a line speed of 100 m / min while setting 100 lines and a depth of 60 μ. The coated heat-resistant film was dried through a drying box set at 100 ° C. Thus, a (a) / (b) type vehicle interior component was produced.

Next, as a base material, a glass mat / hard foam urethane sheet / glass mat (total thickness: 6 mm) in which the layers are bonded with a urethane-based liquid adhesive is used. The vehicle interior members were laminated and adhered and integrated to produce a vehicle interior material. The components for vehicle interior were stacked such that the heat-resistant film (a) came to the base material side. A needle punched nonwoven fabric (made of polyester) having a basis weight of 180 g / m ² was used as the skin material. The upper layer temperature is 120 ° C. and the lower layer temperature is 130 ° C.
And then pressurized for 60 seconds. At the time of pressing, a spacer having a height of 6.8 mm, which is 0.8 mm higher than the target substrate thickness, was used. In the step of bonding and integration by the hot press, the resin (b) layer containing the foaming agent was foamed by the heat of the mold. The bonding of these three layers was performed using an adhesive that oozed out of the glass mat.

Example 2 The amount of resin applied after drying the coating resin composition on a heat-resistant film by rotary screen printing was 13 g.
/ M ² . A non-stretched nylon 6 film having a thickness of 20μ is used as a heat-resistant film, a coating resin composition is a urethane resin as a base resin, an acrylonitrile / methyl methacrylate copolymer film as a foaming agent is microcapsules in which isobutane is encapsulated, and as an additive. An aqueous dispersion containing a small amount of a drying accelerator was used. Rotary screen printing uses a 120 mesh plate, sets the thickness to 100μ, and sets the line speed to 30m.
/ Min. 1 coated heat-resistant film
The coating layer was foamed while drying through a drying box set at 20 ° C. Thus, a film composed of (a) / (d) in which the resin (b) layer containing the foaming agent was foamed was produced. Next, an ethylene-methacrylic acid copolymer (melting point 98 ° C., MFR8) was extrusion-laminated on the nylon 6 film side of this film to a thickness of 30 μm using a T-die set at a die temperature of 200 ° C. In this way, (c) / (a) / (d) type components for vehicle interior were produced.

Next, a polyester fiber mat having a basis weight of 800 g / m ² as a base material and a needle-punched nonwoven fabric (polyester) having a basis weight of 180 g / m ² in which a web-like polyester-based hot melt adhesive is laminated on the back side as a skin material at 30 g / m ^2. Was used. The resin foam layer (d) layer of the component for vehicle interior was set on the lower die of the press machine in which the temperature of the upper and lower dies was set to 50 ° C. A base material heated in a heating furnace at 220 ° C. was placed on the vehicle interior component, a skin material was immediately placed on the base material, and pressure-molded using a 5 mm-thick spacer for 40 seconds to form a vehicle. The interior material for use was produced. The three layers are integrated by the skin material present on each joint surface and the hot melt adhesive of the vehicle interior components.

Example 3 A coating resin composition was applied on a heat-resistant film by a gravure printing method so that the resin application amount after drying was 5 g / m ² . A 12 μm thick biaxially stretched PET film subjected to surface corona discharge treatment was used as the heat-resistant film. The coating resin composition was an acrylic ester copolymer as a base resin, and vinylidene chloride / acrylonitrile copolymer film as a foaming agent. The encapsulated microcapsules and an aqueous dispersion containing a small amount of a silicone-type defoamer and a drying accelerator as additives were used. The gravure printing was performed at a line speed of 100 m / min while setting 100 lines and a depth of 60 μ. The coated heat-resistant film was placed in a heating furnace at 140 ° C. and dried. In the heating furnace, the coating layer was foamed simultaneously with drying. The resin (b) layer containing the foaming agent thus foamed (a) / (d)
A type of vehicle interior component was manufactured.

Next, a glass mat / hard foam urethane sheet / glass mat (total thickness: 6 mm) in which the layers are bonded with a urethane-based liquid adhesive is used as a base material. The vehicle interior members were laminated and adhered and integrated to produce a vehicle interior material. The components for vehicle interior were stacked such that the heat-resistant film (a) came to the base material side. A needle punched nonwoven fabric (made of polyester) having a basis weight of 180 g / m ² was used as the skin material. The upper layer temperature is 120 ° C. and the lower layer temperature is 130 ° C.
And then pressurized for 60 seconds. At the time of pressing, a spacer having a height of 6.8 mm, which is 0.8 mm higher than the target substrate thickness, was used. The bonding of these three layers was performed using an adhesive that oozed out of the glass mat.

Comparative Example 1 The laminated body (a) of the present invention
A vehicle interior material was produced in the same manner as in Example 1 except that a single-layer heat-resistant film (a) was used instead of using (b).

Evaluation method of generation of abnormal noise The interior materials for vehicles obtained in Examples 1 to 3 and Comparative Example 1 were attached to the ceiling of an automobile, and the generation of abnormal noise when vibration was applied was evaluated. The results were as follows. Example 1: No particular noise was observed. Example 2: Abnormal noise was not particularly observed. Example 3: Abnormal noise was not observed. Comparative Example 1: A rubbing sound and a squeaking sound were observed.

[0032]

By using the interior component of the present invention having a ventilation blocking layer as a back surface material and forming an interior material for a vehicle, good sound absorption is maintained, and the distribution of indoor air from the surface layer to the back surface is achieved. As a result, dirt can be prevented from adhering to the skin material. Also, since the back side in contact with the vehicle body is made of foamed resin, no abnormal noise (squeaking noise) due to friction occurs.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Norio Ise 2-4-1, Kutaro-cho, Chuo-ku, Osaka-shi, Osaka Kurashiki Spinning Co., Ltd. Osaka head office 2-4-131 Kutaro-cho, Kurashiki Spinning Co., Ltd. Osaka head office F-term (reference) 3D023 BA01 BA02 BA03 BB02 BC00 BD01 BE04 BE06 BE31 4F100 AK01A AK01B AK01C AK25 AK41 AK46 AK51 AK71 AL01 BA02 BA03 BA10 BA10C EH46B EH462 EJ022 EJ55 GB33 JA04A JA04C JB16C JH01 JJ03A YY00A YY00C

Claims (6)

[Claims] 1. A heat-resistant film having a melting point of 150 ° C. or more (a)
A vehicle interior component member coated with a resin layer (b) containing a foaming agent. 2. A heat-resistant film (a) having a melting point of 150 ° C. or higher.
A vehicle interior component in which a resin foam layer (d) is laminated on the substrate. 3. The vehicle interior according to claim 2, wherein the resin foam layer (d) is formed by applying a resin layer (b) containing a foaming agent to the heat-resistant film (a) and then foaming. Components. 4. The vehicle interior component according to claim 1, wherein a thermoplastic resin layer (c) having a melting point of 150 ° C. or less is further laminated outside the heat resistant film (a). Components. 5. An interior material for a vehicle in which a skin material, a base material and a back material are combined in this order, wherein the back material is the interior component (a) / (b) or the interior component (a) / (b) according to claim 1. 4. A vehicle interior material comprising the interior component (a) / (d) according to 3 and laminated and molded such that the heat-resistant film (a) surface of the back surface material is located on the base material side. 6. An interior material for a vehicle in which a skin material, a base material and a back material are combined in this order, wherein the back material is the interior component (c) / (a) / (b) or the interior component according to claim 4. (c) /
A vehicle interior material comprising (a) / (d) and laminated and molded such that the thermoplastic resin (c) surface of the back surface material is located on the base material side.